If you want to delay, you don't even need something that complicated, just run your favorite PBKDF function as a part of your app.. Or maybe not even add, add a

If you want to delay, you don't even need something that complicated, just run your favorite PBKDF function as a part of your app.. Or maybe not even add, add a plain "sleep()" call before trying to decode input data. It's just the counter that is impossible.